1- The SDK is incomplete I agree… But what is there should be relied upon
2- New tools HAVE been learned ( And used ) over a VERY Steep curve
3- We ( And I assume other developers ) Are not stupid enough to use Deprecated elements in a commercial product , The Modelbehaviour aspect has seen a lot of change and these changes have been implemented. There are No Deprecated elements in our product However we DID not expect the newly added or amended sections of the process to drastically change without warning that they even Might